JP4008897B2 - Speaker - Google Patents

Description

  The present invention relates to a speaker with illumination.

The speaker with illumination emits light from the diaphragm according to, for example, the strength of the audio input signal. At this time, the light changes in intensity, or the light is turned on or blinks, and the light emission state changes. Such a speaker with illumination is effective for amusement and the like. Examples of the speaker with illumination include the following (Patent Document 1). In this speaker, a holder is attached to the center of the front surface of the diaphragm, and a light emitting diode is attached to the holder. When a drive signal is applied to the light emitting diode, the diode emits light, and the light from the diode is totally reflected by the diaphragm. As a result, it is possible to provide a presentation effect by the speaker by emitting light together with sound output.
Japanese Patent Laid-Open No. 2003-23693

  By the way, the above speaker with illumination has the following problems. This speaker is equipped with a special holder for mounting the light emitting diode on the front side of the diaphragm, securing a space for mounting the holder by machining the front center of the diaphragm, and this space through the support It is necessary to attach a holder. As a result, there are problems that the processing procedure increases and the manufacturing cost increases. In addition, in order to irradiate the front surface of the diaphragm with light from the light emitting diodes, it is necessary to mount a large number of light emitting diodes side by side on the holder, which further increases processing steps and increases material costs and manufacturing costs. .

  An object of the present invention is to provide a loudspeaker that can solve the above-described problems and can provide a light effect with a simple structure.

In order to solve the above problems, a first aspect of the invention, a diaphragm 4 that transmits or diffuse light, provided in a space portion surrounded by the rear side frames and / or plate of the vibration plate 4, the The light emitting means 10 emits light toward the diaphragm 4 , and the light emitting means 10 is provided in the space portion while the light emitted from the light source and the light from the light source is incident on the end face. The light guide 11 has a tubular clad 11A and a core 11B made of a material having a higher refractive index than that of the clad 11A, and is positioned opposite to the diaphragm 4. The light guide 11 is provided with a reflector that reflects the light incident on the light guide 11 toward the diaphragm 4, and the light guide 11 is provided on the outer periphery of the back of the diaphragm 4 and has a circular shape. this partially cut away, the light source is provided on its end face A speaker characterized by.
According to a second aspect of the present invention, in the speaker according to the first aspect, the reflector includes a strip-shaped reflective layer 11C provided along the length direction between the clad 11A and the core 11B. It is characterized by.
A third aspect of the present invention, in the speaker according to claim 1, wherein the reflector is characterized in that a reflecting sheet 11D arranged on the back of the light guide 11 ₁ having no internal reflection layer .

According to the present invention, a special holder for attaching the light emitting diode to the front side of the diaphragm as in the prior art can be eliminated, and processing for the front center of the diaphragm can be eliminated. And a significant increase in manufacturing costs can be prevented. In addition, only the light emitting means for emitting light and the diaphragm for transmitting light are used, and the light emitting means is composed of a light source such as a light emitting diode and a light guide having a simple structure. The structure for emitting light from the diaphragm can be simplified as compared with the conventional case. Also from this point, the processing procedure can be reduced and the manufacturing cost can be prevented from significantly increasing.
In the present invention, since the diaphragm is directly irradiated by the light guide, bright light can be emitted from the front surface of the diaphragm or the diaphragm can emit light.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the speaker according to the present embodiment, FIG. 2 is a side view showing a partial cross section of the side surface of the speaker, and FIG. 3 is a bottom view showing the bottom surface of the speaker. This speaker includes a frame 1 having a concave shape and a circular opening, and a magnetic circuit 2 is provided outside the circular bottom 1A of the frame 1. The magnetic circuit 2 has a structure in which a magnet 2B is provided around a convex portion of a yoke 2A having a convex sectional shape, and a plate 2C is provided in the magnet 2B.

  A bracket 3 is provided at the opening of the frame 1. Further, an edge portion of the diaphragm 4 is attached to the opening portion of the frame 1. The diaphragm 4 is made of a material that transmits light, that is, a material that transmits at least part of the light or a transparent material. An example of such a material is a transparent polypropylene resin. The diaphragm 4 may be one that diffuses light.

The voice coil 4A provided on the diaphragm 4 is provided with a disk-shaped damper 5 processed into a concavo-convex shape so as to face the circular bottom 1A of the frame 1. A circular end of the damper 5 is bent in an L shape and attached to the inside of the bottom 1 </ b> A of the frame 1. A terminal block 6 is attached to the outside of the side portion 1B of the frame 1, and a lead wire 4B connected to the voice coil 4A is connected to the terminal block 6. A terminal block 7 is attached to the outside of the side portion 1B of the frame 1 so as to face the terminal block 6. The terminal block 7 is for the lead wires 12A ₁ and 12B _{1 of} the light emitting diodes 12A and 12B constituting the light emitting means 10. Lead wires 12A ₁ and 12B ₁ of the light emitting diodes 12A and 12B are connected to the three pin terminals 7A of the terminal block 7, respectively. The terminal block 7 is connected to a female connector (not shown), and the guide 7B guides connection to the female connector.

  The light emitting means 10 is provided on the back side of the diaphragm 4 and includes a light guide 11 and light emitting diodes 12A and 12B. The rod-shaped light guide 11 is attached in a circular shape between the inside of the frame 1 and the outside of the damper 5 and on the bottom 1A of the frame 1. As illustrated in FIG. 4, the light guide 11 has an elongated shape with a circular cross section. The light guide 11 includes a tubular clad 11A, a core 11B, and a reflective layer 11C. The clad 11A is made of a transparent material having a low refractive index. An example of the clad material is plastic. The core 11B is made of a material having a higher refractive index than the constituent material of the tubular cladding 11A. An example of the core material is polystyrene. The reflective layer 11C extends in the length direction of the clad 11A between the clad 11A and the core 11B. The reflective layer 11C contains a reflective / diffusing material, such as an acrylic polymer.

Light emitting diodes 12A and 12B are disposed on both end faces of the light guide 11, and the lead wires 12A ₁ and 12B ₁ of the light emitting diodes 12A and 12B are separated from the positive side of the light emitting diodes 12A and 12B and are on the negative side. Are connected to the three pin terminals 7A of the terminal block 7. Light from the light emitting diodes 12 </ b> A and 12 </ b> B is incident on the end face of the light guide 11. As shown in FIG. 5, when the light of the light emitting diode 12A is incident from the end face of the light guide 11, the light passes through the core 11B and the light passing through the core 11B is reflected by the reflective layer 11C as shown in FIG. Scattered and emitted from the side surface of the clad 11A opposite to the side on which the reflective layer 11C is formed. Similarly, the light from the light emitting diode 12B is emitted from the side surface of the clad 11A of the light guide 11.

  When a drive signal is applied to the pin terminal 7A of the terminal block 7, the light emitting diodes 12A and 12B emit light, and thereby the light L is emitted from the light guide 11 as shown in FIG. The light L from the light guide 11 is transmitted and refracted through the transparent diaphragm 4 and is emitted from the front surface of the diaphragm 4. Thereby, the whole diaphragm 4 will be in a light emission state.

  Thus, according to the present embodiment, it is possible to realize a speaker with illumination simply by attaching the light emitting means 10 having a simple structure including the light guide 11 and the light emitting diodes 12A and 12B. As a result, an increase in processing procedures and an increase in material costs and manufacturing costs can be prevented. Further, if the drive signal applied to the light emitting diodes 12A and 12B is changed in luminance or color depending on voice, music, sound effect, etc., the light emission state of light emitted from the front surface of the diaphragm 4 changes. A production effect can be obtained.

The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the present embodiment, and the present invention can be applied even if there is a design change or the like without departing from the gist of the present invention. included. For example, although one light guide is used in the present embodiment, the number of light guides to be attached is not limited to one. Moreover, in this embodiment, although the light emitting diode was arrange | positioned at the both end surfaces of the light guide, you may make it arrange | position a light emitting diode only in one end surface. In the present embodiment, the light guide 11 having the reflective layer 11C provided between the clad 11A and the core 11B is used. However, as shown in FIGS. 7A and 7B, there is no reflective layer 11C. using light guide 11 ₁ may be provided with a reflecting sheet 11D on the opposite side light guide 11 ₁ part of the vibration plate 4.

It is a top view which shows the speaker by embodiment of this invention. It is a side view which shows the partial cross section of the side surface of the speaker shown in FIG. It is a bottom view which shows the bottom face of the speaker shown in FIG. It is a perspective view which shows a light guide. It is explanatory drawing for demonstrating incidence | injection of the light from the light emitting diode with respect to a light guide. It is explanatory drawing for demonstrating discharge | release of the light from a light guide. It is explanatory drawing for demonstrating discharge | release of the light using a light guide and a reflective sheet. It is explanatory drawing for demonstrating discharge | release of the light from a diaphragm.

Explanation of symbols

1 frame 1A bottom 1B side 2 magnetic circuit 2A yoke 2B magnet 2C plate 3 bracket 4 diaphragm 4A voice coil 4B lead wire 5 damper 6, 7 terminal block 7A pin terminal 7B guide 10 light emitting means 11, 11 ₁ light guide 11A Clad 11B Core 11C Reflective layer 11D Reflective sheet 12A, 2B Light emitting diode 12A ₁ , 12B ₁ Lead wire

Claims (3)

Release diaphragm that transmits or diffuse light and (4), provided in a space portion surrounded by the rear side frames and / or plate of the vibration plate (4), the light toward the diaphragm (4) a light emitting means (10) for,
The light emitting means (10) includes a light source that emits light, and a light guide (11) that is provided in the space while light from the light source is incident on the end face. (11) includes a tubular clad (11A) and a core (11B) made of a material having a higher refractive index than the clad (11A), and the light guide is provided at a position opposite to the diaphragm (4). A reflector for reflecting the light incident on the body (11) toward the diaphragm (4) is provided;
The speaker , wherein the light guide (11) is provided on an outer peripheral portion of the back surface of the diaphragm (4), has a circular shape, a part thereof is cut off, and the light source is provided on an end surface thereof . 2. The speaker according to claim 1, wherein the reflector includes a strip-shaped reflective layer (11 </ b> C) provided along a length direction between the clad (11 </ b> A) and the core (11 </ b> B). Speaker. The speaker according to claim 1, wherein the reflector has a light guide body having no reflective layer therein. ₁ The speaker is characterized by comprising a reflective sheet (11D) provided on the back of the head.

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